GB2494010B - Liquid crystal display and driving method thereof - Google Patents

Liquid crystal display and driving method thereof

Info

Publication number
GB2494010B
GB2494010B GB1207256.7A GB201207256A GB2494010B GB 2494010 B GB2494010 B GB 2494010B GB 201207256 A GB201207256 A GB 201207256A GB 2494010 B GB2494010 B GB 2494010B
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
crystal display
driving method
driving
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB1207256.7A
Other languages
English (en)
Other versions
GB2494010A (en
GB201207256D0 (en
Inventor
Jungjae Kim
Soondong Cho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Display Co Ltd
Original Assignee
LG Display Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Display Co Ltd filed Critical LG Display Co Ltd
Publication of GB201207256D0 publication Critical patent/GB201207256D0/en
Publication of GB2494010A publication Critical patent/GB2494010A/en
Application granted granted Critical
Publication of GB2494010B publication Critical patent/GB2494010B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
GB1207256.7A 2011-08-26 2012-04-25 Liquid crystal display and driving method thereof Active GB2494010B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110085743A KR101876561B1 (ko) 2011-08-26 2011-08-26 액정표시장치와 이의 구동방법

Publications (3)

Publication Number Publication Date
GB201207256D0 GB201207256D0 (en) 2012-06-06
GB2494010A GB2494010A (en) 2013-02-27
GB2494010B true GB2494010B (en) 2015-09-16

Family

ID=46261853

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1207256.7A Active GB2494010B (en) 2011-08-26 2012-04-25 Liquid crystal display and driving method thereof

Country Status (5)

Country Link
US (1) US8947343B2 (ko)
KR (1) KR101876561B1 (ko)
CN (1) CN102956210B (ko)
GB (1) GB2494010B (ko)
TW (1) TWI493256B (ko)

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CN103295552B (zh) * 2013-06-18 2015-07-15 深圳市华星光电技术有限公司 一种led背光驱动电路和背光驱动方法
CN105325062B (zh) 2013-06-19 2017-11-10 戴乐格半导体公司 具有综合故障保护的led驱动器
CN203368856U (zh) * 2013-07-29 2013-12-25 深圳市日上光电股份有限公司 一种led照明独立式控制系统
US9058776B2 (en) * 2013-08-06 2015-06-16 Shenzhen China Star Optoelectronics Technology Co., Ltd. LED backlight source and liquid crystal device
CN103354086B (zh) * 2013-08-06 2015-09-30 深圳市华星光电技术有限公司 Led背光源及液晶显示器
JP6220981B2 (ja) * 2014-01-28 2017-10-25 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 短絡検出回路を有するエレクトロルミネセンス装置
KR20160032771A (ko) 2014-09-16 2016-03-25 삼성디스플레이 주식회사 백라이트 유닛의 동작 방법 및 백라이트 유닛을 포함하는 표시장치
KR102222075B1 (ko) * 2014-10-10 2021-03-04 삼성디스플레이 주식회사 유기 발광 다이오드의 품질 검사 방법 및 이를 수행하기 위한 유기 발광 다이오드의 품질 검사 장치
TWI560679B (en) * 2014-12-01 2016-12-01 Hon Hai Prec Ind Co Ltd Backlight driving module and display device using the same
CN105719594B (zh) * 2014-12-01 2019-06-18 鸿富锦精密工业（深圳）有限公司 背光驱动模组及具有背光驱动模组的显示设备
KR20160077443A (ko) * 2014-12-23 2016-07-04 삼성디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시장치
CN105321453A (zh) * 2015-12-01 2016-02-10 武汉华星光电技术有限公司 显示面板以及显示装置
EP3443813A4 (en) * 2016-04-11 2019-11-20 Eaton Intelligent Power Limited FAILSAFE LED SYSTEM
KR102511316B1 (ko) * 2016-05-13 2023-03-16 엘지디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시장치
KR20180024854A (ko) * 2016-08-31 2018-03-08 엘지디스플레이 주식회사 유기전계발광표시장치 및 이의 구동방법
KR102564167B1 (ko) 2016-09-23 2023-08-08 삼성디스플레이 주식회사 백라이트 유닛, 그것의 구동 방법 및 그것을 포함하는 표시 장치
KR102334932B1 (ko) * 2017-04-04 2021-12-06 삼성전자주식회사 전원 안정화 모듈 및 그가 적용된 디스플레이 장치
KR102578708B1 (ko) * 2018-09-03 2023-09-15 엘지디스플레이 주식회사 발광표시장치 및 이의 구동방법
CN109669094A (zh) * 2018-12-19 2019-04-23 上海帆声图像科技有限公司 一种显示屏内信号线的检测装置和方法
US10560990B1 (en) * 2019-04-26 2020-02-11 Infineon Technologies Ag Light emitting diode circuit with accurate current monitoring of two or more different LED strings
US11741816B2 (en) * 2019-07-29 2023-08-29 Lg Electronics Inc. Electronic device having self-diagnosis function
US11178742B1 (en) * 2020-07-15 2021-11-16 Apple Inc. Minimum voltage detector circuit
US11358518B2 (en) 2020-10-06 2022-06-14 Infineon Technologies Ag Light function control redundancy when changing the light intensity of pixelated vehicle headlamps

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KR20110129644A (ko) * 2010-05-26 2011-12-02 주식회사엘디티 액정표시장치의 백라이트 고장 검출회로

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KR20070077719A (ko) * 2006-01-24 2007-07-27 삼성전기주식회사 칼라 ｌｅｄ의 구동 장치
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US20070188112A1 (en) * 2006-02-13 2007-08-16 Samsung Electronics C. Ltd. LED driving apparatus
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Also Published As

Publication number Publication date
US8947343B2 (en) 2015-02-03
GB2494010A (en) 2013-02-27
TW201310135A (zh) 2013-03-01
KR20130022810A (ko) 2013-03-07
GB201207256D0 (en) 2012-06-06
US20130050174A1 (en) 2013-02-28
TWI493256B (zh) 2015-07-21
CN102956210B (zh) 2015-04-01
CN102956210A (zh) 2013-03-06
KR101876561B1 (ko) 2018-07-10

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